/* ============================================================
   simai.feedback — Copper Phosphor Dusk Design System
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
    --bg-primary: #1C1410;
    --bg-secondary: #2A1F14;
    --bg-panel: #3D2E1E;
    --amber: #E8A030;
    --copper: #B8722A;
    --pale-copper: #D4955A;
    --warm-mist: #C8B89A;
    --faded-amber: #A07840;

    --font-display: 'Bebas Neue', sans-serif;
    --font-metric: 'Fraunces', serif;
    --font-mono: 'DM Mono', monospace;
    --font-collage: 'Caveat', cursive;

    --cube-size: 300px;
    --cube-half: 150px;
    --panel-tilt: 10deg;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--warm-mist);
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ── Zone A: Signal Monitor ─────────────────────────────────── */
#zone-a {
    position: relative;
    width: 100%;
    height: 60vh;
    min-height: 500px;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.ambient-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(ellipse at center, rgba(232, 160, 48, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* ── Site Header ────────────────────────────────────────────── */
.site-header {
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 10;
}

.header-label {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--amber);
    letter-spacing: 0.15em;
}

.header-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--faded-amber);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.header-status {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--amber);
    letter-spacing: 0.15em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--amber);
    animation: statusBlink 2s ease-in-out infinite;
}

@keyframes statusBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ── Cube Wrapper ───────────────────────────────────────────── */
.cube-wrapper {
    perspective: 800px;
    perspective-origin: 50% 40%;
    position: relative;
    z-index: 2;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.cube {
    transform-style: preserve-3d;
    animation: rotateCube 60s linear infinite;
    width: var(--cube-size);
    height: var(--cube-size);
    position: relative;
    transition: animation-play-state 0.3s;
}

.cube:hover {
    animation-play-state: paused;
}

@keyframes rotateCube {
    from { transform: rotateX(-15deg) rotateY(0deg); }
    to   { transform: rotateX(-15deg) rotateY(360deg); }
}

/* ── Cube Faces ─────────────────────────────────────────────── */
.cube-face {
    position: absolute;
    width: var(--cube-size);
    height: var(--cube-size);
    backface-visibility: hidden;
    border: 1px solid var(--copper);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    overflow: hidden;
}

.face-front  { transform: rotateY(0deg)   translateZ(var(--cube-half)); }
.face-right  { transform: rotateY(60deg)  translateZ(var(--cube-half)); }
.face-back   { transform: rotateY(120deg) translateZ(var(--cube-half)); }
.face-left   { transform: rotateY(180deg) translateZ(var(--cube-half)); }
.face-top    { transform: rotateY(240deg) translateZ(var(--cube-half)); }
.face-bottom { transform: rotateY(300deg) translateZ(var(--cube-half)); }

/* ── Hatch Overlay ──────────────────────────────────────────── */
.hatch-overlay {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        45deg,
        rgba(184, 114, 42, 0.06) 0px,
        rgba(184, 114, 42, 0.06) 1px,
        transparent 1px,
        transparent 6px
    );
    pointer-events: none;
    z-index: 1;
}

/* ── Collage Layer ──────────────────────────────────────────── */
.collage-layer {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 2;
}

.collage-text {
    position: absolute;
    font-family: var(--font-collage);
    font-size: 13px;
    color: var(--faded-amber);
    opacity: 0.4;
    white-space: nowrap;
    line-height: 1.2;
    user-select: none;
}

/* ── Face Content ───────────────────────────────────────────── */
.face-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3;
    padding: 20px;
    gap: 6px;
}

.face-label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--copper);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-align: center;
    line-height: 1.2;
}

.face-metric {
    display: flex;
    align-items: baseline;
    gap: 4px;
    line-height: 1;
}

.metric-value {
    font-family: var(--font-metric);
    font-size: 52px;
    font-variation-settings: 'wght' 300, 'opsz' 72;
    color: var(--pale-copper);
    transition: font-variation-settings 0.8s ease;
}

.metric-unit {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--copper);
    letter-spacing: 0.1em;
}

.face-detail {
    font-family: var(--font-mono);
    font-size: 8px;
    color: var(--faded-amber);
    letter-spacing: 0.15em;
    text-align: center;
    text-transform: uppercase;
}

/* ── VU Ring SVG ────────────────────────────────────────────── */
.vu-ring {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 50px;
    height: 50px;
    opacity: 0.7;
}

.vu-outer {
    fill: none;
    stroke: var(--copper);
    stroke-width: 1.5;
    opacity: 0.4;
}

.vu-inner {
    fill: none;
    stroke: var(--amber);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-dasharray: 213.6;
    stroke-dashoffset: 213.6;
    transition: stroke-dashoffset 800ms ease-in-out;
    transform-origin: center;
    transform: rotate(-90deg);
}

/* ── Mini Cube ──────────────────────────────────────────────── */
.cube-mini {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--copper);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.5);
    transition: opacity 0.5s ease, transform 0.5s ease;
    z-index: 100;
    cursor: pointer;
}

.cube-mini.visible {
    opacity: 1;
    transform: scale(1);
}

.cube-mini-inner {
    font-family: var(--font-display);
    font-size: 10px;
    color: var(--amber);
    letter-spacing: 0.1em;
    text-align: center;
}

/* ── Zone B: HUD Rail ───────────────────────────────────────── */
#zone-b {
    position: relative;
    width: 100%;
    height: 40px;
    background: linear-gradient(to bottom, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-top: 1px solid rgba(184, 114, 42, 0.3);
    border-bottom: 1px solid rgba(184, 114, 42, 0.3);
    display: flex;
    align-items: center;
    overflow: hidden;
}

.rail-label-left,
.rail-label-right {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--faded-amber);
    letter-spacing: 0.15em;
    padding: 0 12px;
    white-space: nowrap;
    z-index: 2;
    flex-shrink: 0;
}

.waveform-strip {
    flex: 1;
    height: 40px;
    overflow: visible;
}

/* ── Zone C: Information Panels ─────────────────────────────── */
#zone-c {
    width: 100%;
    background: linear-gradient(to bottom, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: 40px 32px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* ── Panel Cards ────────────────────────────────────────────── */
.panel-card {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--copper);
    transform: rotateX(var(--panel-tilt));
    transform-origin: top center;
    perspective: 600px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.panel-card:hover {
    transform: rotateX(0deg);
}

.panel-header {
    background: var(--copper);
    padding: 8px 14px;
    position: relative;
    z-index: 3;
}

.panel-sys-label {
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--bg-primary);
    letter-spacing: 0.08em;
}

.panel-collage {
    position: absolute;
    inset: 0;
    top: 36px;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.panel-collage .collage-text {
    font-size: 15px;
    opacity: 0.15;
}

.panel-body {
    position: relative;
    z-index: 2;
    padding: 20px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.panel-primary-metric {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.panel-big-num {
    font-family: var(--font-metric);
    font-size: 64px;
    font-variation-settings: 'wght' 300, 'opsz' 72;
    color: var(--pale-copper);
    line-height: 1;
    transition: font-variation-settings 0.8s ease;
}

.panel-big-num.active-metric {
    animation: attentionPulse 3s ease-in-out infinite;
}

@keyframes attentionPulse {
    0%, 100% { text-shadow: 0 0 0px var(--amber); }
    50%       { text-shadow: 0 0 18px var(--amber), 0 0 36px var(--copper); }
}

.panel-big-unit {
    font-family: var(--font-mono);
    font-size: 16px;
    color: var(--copper);
    letter-spacing: 0.1em;
}

.panel-description {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--amber);
    letter-spacing: 0.1em;
    line-height: 1.3;
}

.panel-mono-block {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--warm-mist);
    line-height: 1.8;
    border-top: 1px solid rgba(184, 114, 42, 0.3);
    padding-top: 10px;
}

.panel-mono-block div {
    letter-spacing: 0.05em;
}

.panel-vu {
    width: 60px;
    height: 60px;
    align-self: flex-end;
    opacity: 0.8;
}

/* ── Zone D: Extended Tile Rows ─────────────────────────────── */
#zone-d {
    width: 100%;
    background: var(--bg-primary);
    padding: 40px 32px 60px;
}

.tile-row-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    border-bottom: 1px solid rgba(184, 114, 42, 0.3);
    padding-bottom: 10px;
}

.tile-row-label {
    font-family: var(--font-display);
    font-size: 20px;
    color: var(--amber);
    letter-spacing: 0.1em;
}

.tile-row-timestamp {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--faded-amber);
    letter-spacing: 0.1em;
}

.tile-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}

/* ── Tile Cards ─────────────────────────────────────────────── */
.tile-card {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid rgba(184, 114, 42, 0.4);
    padding: 20px 16px;
    overflow: hidden;
    transition: border-color 0.3s ease, background 0.3s ease;
}

.tile-card:hover {
    border-color: var(--copper);
    background: var(--bg-panel);
}

.tile-label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--copper);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.tile-metric {
    font-family: var(--font-metric);
    font-size: 42px;
    font-variation-settings: 'wght' 400, 'opsz' 72;
    color: var(--pale-copper);
    line-height: 1;
    margin-bottom: 8px;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.tile-unit {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--copper);
}

.tile-sub {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--faded-amber);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.tile-card .hatch-overlay {
    opacity: 0.6;
}

/* ── Footer ─────────────────────────────────────────────────── */
.platform-footer {
    border-top: 1px solid rgba(184, 114, 42, 0.2);
    padding-top: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.footer-label {
    font-family: var(--font-display);
    font-size: 32px;
    color: var(--amber);
    letter-spacing: 0.2em;
    opacity: 0.7;
}

.footer-sub {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--faded-amber);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.footer-copy {
    font-family: var(--font-mono);
    font-size: 9px;
    color: rgba(168, 120, 64, 0.4);
    letter-spacing: 0.1em;
}

/* ── Diagonal texture on face content top bar ───────────────── */
.face-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 28px;
    background: linear-gradient(to bottom, rgba(184, 114, 42, 0.15) 0%, transparent 100%);
    pointer-events: none;
    z-index: 0;
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--copper);
    border-radius: 0;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
    #zone-c {
        grid-template-columns: 1fr;
        padding: 24px 16px;
    }

    .tile-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    #zone-a {
        height: 50vh;
    }

    :root {
        --cube-size: 200px;
        --cube-half: 100px;
    }

    .metric-value {
        font-size: 36px;
    }
}

@media (max-width: 600px) {
    .tile-grid {
        grid-template-columns: 1fr;
    }

    .site-header {
        padding: 0 16px;
    }

    .header-tag {
        display: none;
    }
}